Dynamical modelling and the origin of gas turbulence in z ∼ 4.5 galaxies

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Volume 687 (July 2024)

A&A, 687 (2024) A35

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Table 4.

Results of the fiducial mass decomposition models.

Object	log(M_*/M_⊙)	R_eff, * (kpc)	n	Gas_norm	log(f_bar)	log(M_gas/M_⊙)	log(M₂₀₀/M_⊙)
BRI1335−0417	10.4 $_{- 0.1}^{+ 0.1}$ $^{+0.1}_{-0.1}$	2.3 $_{- 0.4}^{+ 0.5}$ $^{+0.5}_{-0.4}$	6.9 $_{- 2.1}^{+ 2.1}$ $^{+2.1}_{-2.1}$	0.06 $_{- 0.04}^{+ 0.06}$ $^{+0.06}_{-0.04}$	–0.728	9.8 $_{- 0.5}^{+ 0.3}$ $^{+0.3}_{-0.5}$	11.2
J081740	10.6 $_{- 0.2}^{+ 0.2}$ $^{+0.2}_{-0.2}$	2.4 $_{- 0.5}^{+ 0.5}$ $^{+0.5}_{-0.5}$	6.7 $_{- 2.4}^{+ 2.3}$ $^{+2.3}_{-2.4}$	1.4 $_{- 0.9}^{+ 1.2}$ $^{+1.2}_{-0.9}$	−1.5 $_{- 0.7}^{+ 0.5}$ $^{+0.5}_{-0.7}$	10.5 $_{- 0.5}^{+ 0.3}$ $^{+0.3}_{-0.5}$	12.3 $_{- 0.5}^{+ 0.7}$ $^{+0.7}_{-0.5}$
SGP38326−1	11.0 $_{- 0.2}^{+ 0.2}$ $^{+0.2}_{-0.2}$	2.2 $_{- 0.6}^{+ 0.7}$ $^{+0.7}_{-0.6}$	6.3 $_{- 2.4}^{+ 2.5}$ $^{+2.5}_{-2.4}$	1.9 $_{- 0.9}^{+ 0.6}$ $^{+0.6}_{-0.9}$	−1.7 $_{- 0.9}^{+ 0.7}$ $^{+0.7}_{-0.9}$	11.3 $_{- 0.3}^{+ 0.1}$ $^{+0.1}_{-0.3}$	13.2 $_{- 0.7}^{+ 0.9}$ $^{+0.9}_{-0.7}$
SGP38326−2	10.3 $_{- 0.6}^{+ 0.4}$ $^{+0.4}_{-0.6}$	1.7 $_{- 0.4}^{+ 0.4}$ $^{+0.4}_{-0.4}$	5.3 $_{- 2.9}^{+ 3.1}$ $^{+3.1}_{-2.9}$	2.5 $_{- 1.4}^{+ 1.1}$ $^{+1.1}_{-1.4}$	−2.2 $_{- 1.3}^{+ 1.0}$ $^{+1.0}_{-1.3}$	11.1 $_{- 0.3}^{+ 0.2}$ $^{+0.2}_{-0.3}$	13.3 $_{- 1.0}^{+ 1.3}$ $^{+1.3}_{-1.0}$

Notes. Best-fit parameters of our dynamical model: stellar mass (M_*); stellar effective radius (R_eff, *); stellar Sérsic index (n); normalisation of the gas mass (gas_norm); baryon fraction (f_bar). We also show the total gas mass (M_gas) derived as gas_norm × L_CO (see Table 1) and the CDM halo mass (M₂₀₀) derived as M_bar(1 − f_bar)/f_bar. For BRI1335−0417, we report the values of f_bar and M₂₀₀ in italic as they are kept fixed in our fiducial model.

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